Google Analytics by host

ga.php

<?php
    //  Created by Emil Stahl on 09/08/14.
    //  Copyright (c) 2014 emilstahl.dk. All rights reserved.
    
    $site = idn_to_utf8($host);
    
    // Her indsætter du domænet og UA id'et fra Google Analytics
    $UA = array('gadgetcentralen.dk' => 'UA-XXXXX', 'xxx.dk' => 'UA-XXXXX', 'zzz.dk' => 'UA-XXXXX');
?>
<script>
    (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
    (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
    m=s.getElementsByTagName(o)[0];
    a.async=1;
    a.src=g;
    m.parentNode.insertBefore(a,m)
    })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
    ga('create', '<?= $UA[$site]; ?>', '<?= $site; ?>');
    ga('require', 'displayfeatures');
    ga('require', 'linkid', 'linkid.js');
    ga('send', 'pageview');
</script>